In Spain, Madrid's city hall turned off one of the capital's most emblematic monuments, the Puerta de Alcala arch, on Feb. 1, 2007. In the southern city of Seville, local authorities did the same with the famous Giralda Tower, and in the Mediterranean city of Valencia, the Ciudad de las Ciencias complex went dark.
(Photo: P. DESMAZES/AFP/Getty Images)
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